Combined apparatus for taking and projecting pictures



E. ALLAIS.

COMBI NED APPARATUS FOR TAKING AND PROJECTING PICTURES. APPLICATION FILED AUG-6, 1914.

1,397,496. Patented Nov. 22, 1921.

2 SHEETSSHEET I.

E. ALLAIS.

COMBiNED APPARATUS FOR TAKING AND PROJECTIN'G PICTURES. APPLICATION FILED AUG-6,1914.

1 ,397 ,496, Patented Nov. 22, 1921.

2 SHEETS-SHEET 2.

PATENT OFFICE.

EMILE ALLAIS, OF REIT/IS, FRANCE.

COMBINED APPARATUS FUR- TAKING AND PROJEGTING PICTURES.

Specification of Letters Patent.

Patented Nov. 22, 1921.

Application filed August 6, 1914. Serial No. 855,481.

(GRANTED UNDER THE PROVISIONS OF THEACT OF MARCH 3, 1921, 41 STAT. L, 1313.)

To all whom it may concern.

Be it known that I, EMILE ALLAIs, gentleman, a citizen of the Republic of France, residing at 17 Boulevard Henri Vasnier, Reims, France, have invented certain new and useful Improvements in Combined Apparatus for Taking and Projecting Pictures, of which the following is a specification.

This invention relates to transmission gear for cinematographic shutters with transmitter of variable length.

A mode of execution of this invention is shown by way of example in the accompanying drawings.

Figure 1 18 a general perspective view of the gear.

Fig. 2 is a side view of the upper part of the apparatus.

Figs. 3 and 41 are details.

This apparatus which can be used for taking views comprises a box A closer. at the front and the back by movable boards which slide in grooves. Gn the sides of the box and inside the same two small strips C, C are fixed comprising grooves in which the frame D is made to slide.

At the base of the box a screw socket E is provided in which a screw F can be turned which has a point F supporting the frame D. This point enters in a small hole provided in the support 30.

On a screw F an oblique speed reducing pinion G is mounted which engages with a worm H. At the base of the screw F a projection is arranged which prevents the screw from rising too high.

The following parts are fixed below the top of the box:

1. A support L having an opening in front of an opening 1 referred to hereafter. This support is provided with a very flexible fiat spring M which has an opening 1 in front of which is placed a sleeve 24: for the objective.

Between the support L and the flat spring M a disk R shown in dotted lines is arranged, which must be. thin at the edges carrying the views and must be reinforced toward the center by being thickened toward the middle or by a further disk used to support disk B.

This spring M produces a slight pressure on the disk, which pressure is increased by a weight 35 arranged in front of the sleeve 24.

2. A support N is provided with a sleeve 2, which is intended to receive the tube containing the objective for taking views.

The following parts are fixed on the frame D:

1. Two supports 3 and l supporting the shaft 13 which passes through the eccentric Q and the worm H.

The support t also serves to support the shaft of the speed reducing wheel 5 and the small pinion P which engages, as well as pinion P, with the speed reducing wheel, pinions P and P having the same diameter and the same number of teeth.

The shaft of the speed reducing wheel rises and descends in a cutaway portion 25 provided in the board which closes the apparatus on the side of the crank handle. The cutaway portion is closed by a card board which slides in two grooves arranged on this side of the bo:-:. The shaft of the speed reducing wheel passes through this card board.

2. Two thin supports 3l32 covered with cloth at their ends prevent the disk from rubbing against the eccentric.

3. A pin on which the sleeve T of the toothed wheel is made to turn.

Behind the support L and on its prolonation a. pin is fixed at 6 on which the rim forming the shutter is made to turn. To his rim three short studs 4-3, 44: and 4:8 with flat heads are soldered, the points only of which are seen from behind in F 1. This rim, which is only supported in the center by two arms forming a sector, is connected to the small pinion P by a device consisting of:

A pin 8 screwed onto the extension of support L, on which pin a support 9 is made to oscillate. On this support a bevel wheel 10 is mounted and to the lower end of support 9 a sleeve 11 is soldered in which a shaft carrying a second bevel wheel 12 is operated.

This shaft is connected to pinion P by the following contrivance: A piece of flexible tubing 33 connects the shaft operated in sleeve 11 with two small rigid tubes lei and 27 soldered in a parallel direction, and in these tubes two thick pins 13 and 26 are also fixed in a parallel direction; these pins 13, 26 are themselves connected to the pinion P by a flexible transmitter 3%.

Owing to the fact that the pins slide in tubes 14, 27 the length of the transmission gear for the obturator varies automatically according to the upward or downward movement of the frame;

On sleeve T (Fig. 1) a toothed wheel 50 is fixed the teeth of which are maintained in thecenter by. thin stops. The teeth of this wheel engage one after the other with the eccentric O The sleeve T is maintained on its shaft by a screw nut 20. Lugs 15 arranged to pivot on their pins keep the disks applied against the toothed wheel which carries in its center a washer of thin card board.

Two small pins 16 are also arranged on the toothed wheel, which engage with two corresponding holes provided in each washer.

. In Fig. l the frame is shown resting, atthe end of its upward stroke, on the point of screw F. The disk or washer to be exposed is in position on the toothed rim and lies between the support L and the flat spring M. The sensitized surface of the disk is on the side of the objective for taking views. The pins 16 engage with the corresponding holes of the disk, the curved par-tor the eccentric passes by, and the shutter or sector uncovers the openings, the tube containing the objective for taking views being in position in the sleeve 2 of support N..

The apparatus is ready to be worked,it is merely necessary to turn the crank handle.

The frame then descends gradually and the toothed wheel rotates. The views are then impressed on the disk in the'form of a spiral. hen the apparatus is to be operated again when itis at the bottom of its stroke, the frame is lifted with the left hand and screw F is raised by turning the same until the projection at the lower end of this Screw stops this rotation. The frame is then allowed to fall down again and the worm H engages tive disk, the emulsioned surface of which ought to be turned toward the objective for pro ecting.

The projecting is made by transparency on V a screen fixed at 51. This screen is placed on a small tube inserted in a larger tube, the whole forming a support for the screen, so that the screen can be applied against the box when the projectionis finished.

The support referred to is pivoted on a hinge I, so that the screen can be raised when the toothed wheel is to be removed.

The sector which obturates the rim 7 is a shutter for projecting. For taking views this shutter is insufficient, the device of Fig. 3 will therefore be used. The same consists of a very thin metal plate which is cutaway so that the edge only subsjsts which forms a frame. It is covered up almost entirely with non-transparent cloth or paper. At 41' however an opening is provided for allowing the light to pass that is required'for impressing the views.

When views are to be taken this plate is applied against the rim 7, the circumference and arms being made to register. The heads of pins 43, 44 and 48 engage with notches 45, 46 and 47. Y

What I claim is:

An apparatus of the character described for taking pictures comprising in combination, a casing, a movable frame within said casing, means for elevating and lowering said frame, support secured to the top of said casin and comprising a sleeve adapted.

to receive the objective for taking pictures, a flexible spring in front of said support, a disk having a sensitizedv surface between said support and said spring, means for partly covering said sensitized surface, and a shutter or sector for uncovering the non-covered )arts of 'said surface for takin ictures means forreducing the speed of the shutter and means for connecting said reducing means to said shutter, substantially as de- 

